Dear Prudence,
I got divorced amicably 15 years ago. My ex and I continue to see each other socially, even though we don’t want kids. Several months ago, a colleague of my ex’s accused him of sexual harassment. She said he repeatedly asked her about her dating life and made comments about her clothing. Although I would normally err on the side of believing her, I also have reason to believe she wants to get him fired as a result of a past dispute. I have now been contacted by both my ex and the woman in question. He has asked me to defend him during an HR quasi-judicial mediation; she has asked me to cut off contact with him. I refused my ex’s request for help, but I am torn about his colleague’s. As a feminist, I understand why my continuing to invite him to parties or to social events constitutes an implicit defense of him, but as his friend and ex-wife, it pains me to think about cutting him out of my life without knowing all the facts. Help?
—The Good Ex-Wife